Scab is a fungus that affects plants, which can be caused by various types of fungi. The disease usually develops in the presence of a humid climate and poor air circulation, factors that favor the survival of the fungus. The most risky period for the attacks of this mushroom is autumn, especially in case of heavy rainfall. Each type of mushroom has a different way of acting, but the pathology is still recognizable by the appearance of some symptoms, among all the discoloration of the leaves, which generally affects the upper part of them, and then spread rapidly to the rest of the leaf and to the branches, involving, in the worst cases, the whole plant or tree. Once the specimens are contaminated, the seriously damaged leaves or branches weaken until they fall.
There pear scab It is a pathology that occurs on an annual basis, affecting the leaves, branches and fruits. Small dark spots of round shape appear on the leaves of the tree, which lead them to subsequently take on a yellowish color and then to fall. The fruits are affected in a similar way, presenting even more evident and dark spots, which are comparable to real cracks. In severe cases, the fruits appear notably deformed. This pathology also affects the branches, especially the young ones or in the herbaceous state, and is easily recognizable due to some black notches that generally appear at the end of the branch, creating in a short time the cracks that lead the same to weaken, making it difficult to survival.